Which of the following is NOT a common type of hair color application?

Hair tipping is less commonly referenced as a standard type of hair color application when compared to the other options. All-over color involves applying a single shade uniformly from roots to ends, which is a common technique for achieving a consistent base color. Color blocking is a method that uses large sections of contrasting colors, allowing for a more artistic and segmented approach that is popular in modern styling trends. Freehand painting, also known as balayage, is widely used for achieving a natural, sun-kissed effect with soft transitions in color.

In contrast, hair tipping refers specifically to coloring only the ends of the hair, which is a less frequently mentioned method in professional settings. While it can be a style, it does not align as closely with the standard terminology or techniques that are typically taught or practiced widely in hair coloring applications. This is why it stands out as the option that is not as commonly recognized in the context of hair color application methods.